| 应用HHT方法从竖向地震动记录识别场地液化的物理过程 |
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| 引用本文： | 胡聿贤,张郁山,梁建文.应用HHT方法从竖向地震动记录识别场地液化的物理过程[J].地震工程与工程振动,2004,24(3):1-11. |
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| 作者姓名： | 胡聿贤 张郁山 梁建文 |
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| 作者单位： | 中国地震局地球物理研究所,北京,100081;天津大学,土木工程系,天津,300072 |
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| 基金项目： | 国家自然科学基金项目(批准号:50278090)，教育部留学回国人员科研启动基金项目 |
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| 摘 要： | 利用HHT方法分析1987年美国Superstition Hills地震在Wildlife场地上获得的地震加速度记录，深入地论述了实际地震中土层液化对竖向地震动非平稳特性的影响，进而达到了应用HHT方法从地震动记录识别场地液化物理过程的目的。
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| 关 键 词： | 液化 竖向地震动记录 HHT方法 时频分析 瞬时频率时程 |
| 文章编号： | 1000-1301(2004)03-0001-11 |
Identification of physical process of site liquefaction from vertical seismic recordings via the method of HHT |
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| Hu Yuxian,Zhang Yushan,Liang Jianwen.Identification of physical process of site liquefaction from vertical seismic recordings via the method of HHT[J].Earthquake Engineering and Engineering Vibration,2004,24(3):1-11. |
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| Authors: | Hu Yuxian Zhang Yushan Liang Jianwen |
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| Institution: | Hu Yuxian~1,Zhang Yushan~1,Liang Jianwen~2 |
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| Abstract: | Via the method of Hilbert-Huang Transform (HHT), this article analyzed the seismic-acceleration recordings obtained on the Wildlife site during the Superstition Hills earthquake of USA, which occurred in 1987. By doing so, the article demonstrated in depth the effects that were imposed by the liquefaction of soil layers during the real-life earthquake on the non-stationarity of vertical seismic recordings, and thus, gained its ends of identifying the physical process of site liquefaction from seismic recordings by application of HHT method. |
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| Keywords: | liquefaction vertical seismic recordings Hilbert-Huang Transform time-frequency analysis instantaneous frequency time history |
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